Question

Which enter into list of fundamental quantities in any system of units? (a) length, mass, velocity (b) length, time,velocity (d) length, time, mass?

Answer 1

Answer:

(d) length,mass and velocity are the fundamental quantities

Answer 2

Question:-

Which enter into list of fundamental quantities in any system of units?

(a) length, mass, velocity

(b) length, time, velocity

(d) length, time, mass

Answer:-

(d.) Length, time, mass ✔

S.I unit of length is metre (m).

S.I unit of time is second (s).

S.I unit of mass is kilogram (kg).

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What are Fundamental quantities?

Quantities which are independent of other physical quantities or cannot be obtained by the combination of two or more quantities.

What are Fundamental units?

The units which can neither be derived from one another nor resolved broken into anything more basic are called fundamental units.

For example :-

Mass - kilogram

length - metre

Time - second

Temperature - kelvin

What are derived quantities?

Quantities that can be obtained by the combination of two or more fundamental quantities are called drived quantities.

What are derived units?

Any unit which can be obtained by the combination of one or more fundamental units is called derived unit.

For example:-

Acceleration - metre per square second

Velocity - metre per second

Momentum - kilogram metre per second

Force - kilogram metre per square second.

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